James jackson



(No Model.)

J JAGKS ON.

REPRIGERATOR.

Patented Apr. 8, 1884.

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l UNITED STATES PATENT 'JAMES JACKSON, OF NEW YORK, N. Y.

REFRIGERATOR.

SPECIFICATION forming part of Letters Patent No. 296,573, dated April 8, 1884.

Application filed December 17, 18H3. (No model.)

To LEZ whom it mayconcern:

Be it known that I, J Mss J Aoiisoiv, ofthe city and State of New York, have invented an' Improvement in Refrigerators, of which the following is a specication.

Refrigerators have been made with ventilating-openings near the top of the ice-boX, into which air passes and is cooled as it de-v scends, and often there are one or more openf ings at the bottoni of the refrigerator through which the water escapes.

In refrigerators that have heretofore been made there is considerable loss of cooling power, because the air circulates very slowly, especially after the temperature of the cooling-chamber has been reduced, because there is but little diii'erence between the gravity ot' the air in the icechaniber and that in the cooling-chamber.

- I make use of a Ventilating-tube rising from the bottoni of the refrigerator toward or into the ice-ch amber. and a damper may be applied to said tube, so that there will be a downward escape'of air from the ice-chamber to the eX- ternal atmosphere sufficient to promote a circula-tion of the air throughout the ent-ire refrigerator. and impure air will iiow away byf this Ventilating-tube, and amount of escapeair will be regulated by the damper, according to character of the substances that are being I refrigerated.

ln the drawing I have represented the refrigerator by a vertical section. A

The sides c, bottoni b, top c, and ice-chamber d are to be of ordinary character, and doors are to be provided, as usual, for giving access to the ice-chamber and the coolingcharnber e. The partition f separates the icechamber from the coolingchaniber g, and his the bottom of the ice-chamber.

ing-pipe 7c passes through the bottom b of the refrigerator, and it extends up about half the heightofthe coolingehamber e, and a damper, i, may be applied in Vsaid pipe, the stern of which passes through the side of the refriger- The ventilat ator, so as to be easily turned to regulate the extent of the escaping Ventilating-current of air. It will be evident that the coldest air will not escape by this Ventilating-pipe k, be cause the coldest atmosphere descends to the bottom of the cooling-chamber.' The atmosphere, which is charged with vapors and odors from the materialsl in the cooling-chamber, will be found in said chamber at about ,the level of the top of this pipe. and will flow away from the chamber by this pipe, so as to keep the refrigerator sweet and the viands therein wholesome, and the current of air descending through this pipe by gravity will escape, and thereby give sufficient exhausting action to insure a constant circulation of t-he air in the refrigerator and prevent the atmosphere therein becoming stagnant.

Although a portion of the cool air of the refrigerator may be wasted by passing out of the same, I have found that the loss is more than compensated by the increased efficiency of such refrigerator. l

I do not claim a tube with an opening below the refrigerator toconvey away water of condensation; neither do I claim a tube the upper end of which is at or near the level of the bot -tom of the ice-chamber to convey the cold air to a cooling-chamber.

I claim as my invcntion- The combination, with the ice-chamber and the cooling-chamber in a refrigerator, of a Ventilating-pipe opening at its lower end to the exterior atmosphere, and rising within the cooling-chamber to about lthe middle of the same for confining the cold air and for allowing the escape by a downward circulation of a portion of the air within the refrigerator, for the purposes, and substantially as set forth.

Signed by ine this 11th day of December, A. D. 1883.

JAMES JACKSON.

IlVitnesses: A

GEO. T. PINCKNEY, WILLIAM G. Morir. 

